Department of International Medical Center/Ward of General Practice and National Clinical Research Center for Geriatrics, West China Hospital, Sichuan University, Chengdu, China.
Department of Gastroenterology, The First Affiliated Hospital of Chengdu Medical College, Chengdu, China.
J Clin Epidemiol. 2022 Sep;149:110-117. doi: 10.1016/j.jclinepi.2022.05.016. Epub 2022 May 30.
To evaluate the impact of copublication on the citation of Cochrane evidence.
This was a retrospective cohort study including Cochrane reviews published up to 31 December 2015 and their citing up to 11 July 2021, identified from the Web of Science Core Collection database.
A total of 101 copublished and 202 noncopublished Cochrane reviews were included. The median for the total number of citations and the medians for the numbers of citations to the Cochrane review in the first, second, third, and fifth years after publication in the copublished group were higher than those in the noncopublished group [71 (interquartile range {IQR}: 37.5, 118.5) vs. 32.5 (13, 67); 1 (0, 3) vs. 0 (0, 1); 6 (3, 11.5) vs. 2 (1, 5); 8 (4, 15) vs. 3.5 (1, 8); 8 (4, 15) vs. 3 (1, 9), respectively, all P < 0.001]. Copublication of Cochrane reviews meant that 4 of 21 journals and 6 of 22 journals had a higher impact factor in the first and the second year after the copublication than they would have had without the copublication.
Copublication is associated with a higher citation frequency of Cochrane reviews and may increase the impact factor of the journal in which it is copublished. This facilitates broader application of Cochrane evidence and promotes its dissemination.
评估共同发表对 Cochrane 证据引用的影响。
这是一项回顾性队列研究，纳入了截至 2015 年 12 月 31 日发表的 Cochrane 综述及其截至 2021 年 7 月 11 日的引用情况，这些综述均来自 Web of Science 核心合集数据库。
共纳入 101 篇共同发表和 202 篇非共同发表的 Cochrane 综述。共同发表组 Cochrane 综述的总引用数中位数及其发表后第 1、2、3、5 年的引用数中位数均高于非共同发表组[71（四分位距 {IQR}：37.5，118.5）比 32.5（13，67）；1（0，3）比 0（0，1）；6（3，11.5）比 2（1，5）；8（4，15）比 3.5（1，8）；8（4，15）比 3（1，9），均 P<0.001]。Cochrane 综述的共同发表意味着，在共同发表后的第 1 年和第 2 年，21 种期刊中有 4 种和 22 种期刊中的 6 种期刊的影响因子高于没有共同发表的情况。
共同发表与 Cochrane 综述的引用频次较高相关，可能会增加共同发表期刊的影响因子。这有利于更广泛地应用 Cochrane 证据，并促进其传播。
